skin infections Flashcards
what is impetigo?
disease progression?
what are the subtypes of impetigo?
impetigo contagiosa
bulls impetigo
what is impetigo contagious?
what is bulllous impetigo?
why do some s.aureus infections lead to bullies impetigo instead of contagiosa?
S.Aureus produces exfoliation which destroys keratinocyte attachments
leaves desmoglein 1 complex which links keratinocytes together
affects stratum granulosum and leads to bullous impetigo
what is scalded skin syndrome?
newborn disease
colonisation of skin with S.Aureus
caused by diffuse exfoliative toxin
what is the presentation of scalded skin syndrome?
occurs 3-7 days of age
fever, diffuse erythema
sloughing of skin
damage intraepidermal
nikolsky’s sign
what is nikolsky’s sign?
skin slips off with gentle tug
how do you treat SSS?
abx
heals completely with no scare
what are erysipelas and cellulitis?
presentation
what is erysipelas?
what skin layer?
who affected?
acute vs chronic
what is this?
erysipelas
what is cellulitis?
what skin layer?
who affected?
causes?
presentation?
what is this?
cellulitis
what is a skin abscess?
how does it present?
cause?
treatment?
what is this?
skin abscess
what is necrotising fasciitis?
how does nec fasc present?
what is the physical exam finding in nec fasc?
what is this?
necrotising fasciitis
how do you treat nec fasc?
what is type 1 nec fasc?
what causes it?
who does it affect?
what is type 2 nec fasc?
what causes it?
who does it affect?
